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| Message Persistence & Message Expiration time |
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| hrysd35 |
 Posted: Fri Mar 12, 2004 3:58 pm Post subject: Message Persistence & Message Expiration time |
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Newbie
Joined: 12 Mar 2004
Posts: 1
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Hello forum-
I'm kind of confused between Message Persistence & Message Expiration time. Can somebody please elaborate on the same.
I also have following questions -
1) When I make a message Persistence, does it automatically have Infinite Expiration time.
2) If the answer to above question is no, then how do I set an expiration time on the Persistent message.
Thank you. |
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| kirani |
| Posted: Fri Mar 12, 2004 5:09 pm Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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Message Persistence (MQMD.Persistence) and Message Expiry (MQMD.Expiry) are different properties of the messages.
IF a message is flagged as Persistent, then it get's logged into log file by the queue manager. You can set this property by assigning appropriate value/constant (MQPER_NOT_PERSISTENT, MQPER_PERSISTENT or MQPER_PERSISTENCE_AS_Q_DEF) to this field.
Messages can be marked for expiry by setting Expiry time (in tenths of a second) in MQMD.Expiry field. The message becomes eligible to be discarded if it has not been removed from the destiantion queue before this period of time elapses.
| hrysd35 wrote: |
1) When I make a message Persistence, does it automatically have Infinite Expiration time.
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No. As I said earlier, these are two different properties.
| hrysd35 wrote: |
2) If the answer to above question is no, then how do I set an expiration time on the Persistent message.
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Set your MQMD.Expiry to any number.
I aslo recommend following reading material, which will shed more light on these
WebSphere MQ Application Programming Reference
Websphere MQ Application Programming Guide
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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